The invention relates to the technical field of the technical method of steam channeling and plugging, a technical method of steam channeling and plugging of thick oil; the method comprises the following steps: the first step, stirring evenly the cottonseed hull with solid particle qulity percentage of 30% to 60% and water with quality percentage of 40% to 70% and squeezing into the steam channels with high pressure pump; the second step, after the completion of the first step, continuing to mix evenly the wood chips with percentage of 30% to 60% and the water with quality percentage of 40% to 70% and squeezinginto the steam channels with high pressure pump. The invention discloses a technical method of steam channeling and plugging of thick oil, which can effectively solve the problem of leakage of plugging agent. Sawdust and cottonseed hulls are solid soft particles that can be inflated by water and can be effectively plugged in the steam channel to improve oil exploiting rate. The method can save energy and reduce consumption, so as to reduce mining cost.